The Anglo-Soviet Agreement was a formal military alliance signed by the United Kingdom and the Soviet Union against Germany on July 12, 1941; shortly after the German invasion of the latter. Both powers pledged to assist each other and not make separate peace with Germany. The USA perceived this to mean that the USSR intended to support the re-establishment of independent Polish, Czech, and Yugoslav states at the end of the war.(Lynn Davis 2000)(See also: Anglo-Soviet Treaty of 1942)